PPT-Heat-conduction/Diffusion Equation

Douglas Wilhelm Harder MMath LEL Department of Electrical and Computer Engineering University of Waterloo Waterloo Ontario Canada eceuwaterlooca dwharderalumniuwaterlooca 2012 by Douglas Wilhelm Harder Some rights reserved. ma k e commerc l FEA program t thi Two-dimensional conduction:two or three-dimensional. In these cases we may apply a number of differentThese include analytical, graphical and numerical approaches Diffusion plus Convection. ).  . Molecular Diffusion in Gases. Equimolar. . Counterdiffusion. A. B. B. A.  .  . In terms of mole fraction, . Molecular Diffusion in Gases. Uni. -component Diffusion. 3.1 …………. Introduction. 3.2 …………. Biot and Fourier Number. 3.3 …………. . Lumped heat capacity analysis. 3.4 …………. Time constant and response of a thermocouple. 3.5 …………. Transient. Conduction problems may involve multiple directions and time-dependent conditions. Inherently complex – Difficult to determine temperature distributions. One-dimensional. . steady-state. models can represent accurately numerous engineering systems. of Change I. So far…. Outline. Heat Transfer Mechanisms. Conduction Heat Transfer. Convection Heat Transfer. Combined Heat Transfer. Overall Shell Heat Balances. Heat Equations of Change. 6. Heat Equations of Change. equation . Lecture 05. Navier. -Stokes . equation. •. . This. . is. . the. . actual. . form. . of. . the. . conservation. . equations. . solved. . by. . finite. . volume. . based. . An Educational Presentation. Presented By:. Joseph Ash. Jordan Baldwin. Justin Hirt. Andrea Lance. History of Heat Conduction. Jean Baptiste Biot. (1774-1862). French Physicist. Worked on analysis of heat conduction. Review. Diana Mnatsakanova. Neuromuscular Fellow. Utilized as a study resource for the CNCT examination by AANEM/ABEM with permission from Diana . Mnatsakanova. .. Objectives. Motor nerve . conduction studies . Conduction Convection . Radiation. Types of Heat transfer. Heat Transfer. Heat can be transferred in 3 ways. Conduction. Convection. Radiation. Heat flow depends on the temperature difference – . flows from hot to cold. Essential Standard. 6.P.. 3 Understand . characteristics . of energy . transfer and interactions of matter and energy.. Clarifying Objective. 6.P.. 3.1 Illustrate . the transfer of heat energy from warmer objects . ComputersConduction cooling for modular embedded computers have been used for many years in applications where air cooling is not appropriate Standardization efforts in that domain have early helped t presence of bulk fluid motion and by conduction in the absence of it. Therefore,. conduction in a fluid can be viewed as the limiting case of convection, corresponding to the case of quiescent fluid (Fig. 6–1).. Diffusion is a process of . mass transport. that involves the atomic . or molecular motion. .. In the simplest form, the diffusion can be defined as the . random walk. of an ensemble of particles from regions of high concentration to regions of lower concentration. Shape Evolution of Heat Exchanging Surfaces… . P M V Subbarao. Professor. Mechanical Engineering Department. Forced Convection Cooling of Chips Using Air. Analytical Convective Heat Transfer. 1701 Newton’s law of cooling..